Rockwell Automation 5370-OCR2 PAK - Manual (Page 53)

Chapter 5
Creating and Editing Fonts
5–18
The Spacing settings determine how spaces between characters are handled.
The Character Spacing must be set to the average distance between the left
edges of two consecutive characters, and to the distance between lines of
characters. The Space Dimensions are used to detect spaces between
characters.
In general, the system measures distances ”between” characters as the
distance between their correlation boxes, which are near the center of the
characters.
Character Spacing
Character Spacing consists of 2 dimensions:
•
Horizontal Character Spacing should be set to the horizontal distance
from the center of one character to the next.
The horizontal character spacing is used to handle spaces in the string of
read characters, as follows:
1. When the system detects two adjacent characters and the distance
between them is less than 1/2 the horizontal character spacing, the system
treats them as two confusion characters in the same location.
2. When the system detects two adjacent characters and the distance
between them is greater than 1/2 the horizontal character spacing but less
than the horizontal character spacing plus 1/2 the horizontal space
dimension, the system treats them as two consecutive characters with no
space character in between.
3. When the system detects two adjacent characters and the distance is
greater than the horizontal character spacing plus 1/2 the horizontal space
dimension, the system treats them as two characters with a space
character in between. Only a single space is inserted into the string of
read characters, no matter how far apart the characters are.
Defining Spacing